Home / 11,280.46-16,920.69-3,489.10

Finding the Fourth Proportional to 11,280.46, 16,920.69 and 3,489.10

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Solution

The fourth proportional to 11,280.46, 16,920.69 and 3,489.10 is: 5,233.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.46 : 16,920.69 = 3,489.10 : x
  2. Step 2: Convert to fraction form
    11,280.46/16,920.69 = 3,489.10/x
  3. Step 3: Cross multiply
    11,280.46x = 16,920.69 × 3,489.10
  4. Step 4: Simplify right side
    11,280.46x = 59,037,979.48
  5. Step 5: Solve for x
    x = 59,037,979.48/11,280.46
  6. Step 6: Final answer
    x = 5,233.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.